These aren't very good target's for tech companies to tackle - they mostly already have well known solutions that aren't being applied for political or economic

These aren't very good target's for tech companies to tackle - they mostly already have well known solutions that aren't being applied for political or economic reasons, not technology ones. 1. Build dramatically more housing. In places where they do this, like Tokyo, there is no housing shortage. They reasons this doesn't happen in, for example SF, is more or less just protectionism for housing as investment assets. 2. We know the solutions to global health problems - investment in highly efficient single-payer public healthcare. The reasons this doesn't happen are a mixture of political and economic. 3. Progressive taxation is the solution, doesn't happen for political reasons. 4. This is partly media driven perception, partly the results of not fixing the above issues - but either way, a nebulous and ill defined people problem. 5. This one seems less obvious to me, but is definitely a people and economics issue, not a technology one.